Granted Patent
Utility
US 6,028,076 · App. 09/029,076
Purine derivative
Inventors:
Kohsaku Hirota, Yoshiaki Isobe, Nobuyoshi Chiba, Harumi Satoh, Haruo Takaku, Hiroyuki Matsui, Haruhisa Ogita
Patented Case
View Patent ↗
Granted: Feb 22, 2000
Filed: Mar 3, 1998
Inventors
Kohsaku Hirota
Yoshiaki Isobe
Nobuyoshi Chiba
Harumi Satoh
Haruo Takaku
Hiroyuki Matsui
Haruhisa Ogita
Assignee (at issue)
Japan Energy Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.